@article{DE_1971_7_4_a14,
     author = {S. G. Kondratenya},
     title = {The behavior of the solution of systems of two differential equations in the neighborhood of an essential singularity},
     journal = {Differencialʹnye uravneni\^a},
     pages = {747--749},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_4_a14/}
}